I will create a custom cross platform mobile app

T
tristan_sowieja
T
tristan_sowieja
Tristan
create a custom cross platform mobile app
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create a custom cross platform mobile app

About this gig

I build cross-platform mobile apps with .NET MAUI - one codebase, runs on Android (and iOS).

What I offer:

  • Native-feeling Android apps built with .NET MAUI / Blazor Hybrid
  • Local data storage (SQLite), offline support
  • Clean MVVM architecture and tested code
  • Custom UI, app logic, and integrations
  • Help with Google Play preparation

I built a full reading-tracker app with .NET MAUI that ships with 1,000+ unit tests and 96% code coverage - so you can trust the work is solid.

Tell me about your app idea and I will help you turn it into a real, working product. Message me before ordering so we can plan the scope.

  • App type

    • Hybrid

  • Programming language

    • TypeScript
    • HTML
    • React Native
    • Other

  • Frameworks

    • Other

  • Purpose

    • Shopping
    • Booking
    • Finance
    • Entertainment
    • Medical
    • Health & fitness
    • Crypto
    • Custom
    • Gaming
    • Other

  • Tools

    • Power apps
    • Xamarin
    • Xcode
    • Visual Studio

  • Expertise

    • Cross browser/Device compatibility
    • Performance
    • Security
    • Design
    • Ads & monetization
    • Compatibility

Get to know Tristan

Tristan

IT specialist for application development

  • FromGermany
  • Member sinceMay 2026
  • Avg. response time1 hour

  • Languages

    German, English
Software developer with a strong foundation in the .NET ecosystem and a passion for building things that work. I cover a wide range of development needs: Mobile apps (Android, cross-platform with .NET MAUI) Websites and web apps (Blazor, ASP.NET, modern frontends) Backend systems and REST APIs Desktop applications FiveM scripts (Lua, server/client resources) and more on Request I write clean, maintainable code and care about testing and proper structure - my own projects ship with 90%+ test coverage. Clear communication, reliable delivery. Tell me what you need and I'll get it built.

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